--- /dev/null
+#include <limits.h>
+
+#ifdef __unix__ /* ??? Is that good enough? */
+#include <sys/types.h>
+#include <sys/mman.h>
+#include <sys/stat.h>
+#include <fcntl.h>
+#ifndef MAP_ANON
+#ifdef MAP_ANONYMOUS
+#define MAP_ANON MAP_ANONYMOUS
+#else
+#define MAP_ANON MAP_FILE
+#endif
+#endif
+#ifndef MAP_FILE
+#define MAP_FILE 0
+#endif
+#ifndef MAP_FIXED
+#define MAP_FIXED 0
+#endif
+#endif
+
+#define MAP_START (void *)0x7fff8000
+#define MAP_LEN 0x10000
+
+#define OFFSET (MAP_LEN/2 - 2 * sizeof (char));
+
+f (int s, char *p)
+{
+ int i;
+ for (i = s; &p[i] < &p[40] && i >= 0; i++)
+ {
+ p[i] = -2;
+ }
+}
+
+main ()
+{
+#ifdef MAP_ANON
+ char *p;
+ int dev_zero;
+
+ dev_zero = open ("/dev/zero", O_RDONLY);
+ /* -1 is OK when we have MAP_ANON; else mmap will flag an error. */
+ if (INT_MAX != 0x7fffffffL || sizeof (char *) != sizeof (int))
+ exit (0);
+ p = mmap (MAP_START, MAP_LEN, PROT_READ|PROT_WRITE,
+ MAP_ANON|MAP_FIXED|MAP_PRIVATE, dev_zero, 0);
+ if (p != (char *)-1)
+ {
+ p += OFFSET;
+ p[39] = 0;
+ f (0, p);
+ if (p[39] != (char)-2)
+ abort ();
+ p[39] = 0;
+ f (-1, p);
+ if (p[39] != 0)
+ abort ();
+ }
+#endif
+ exit (0);
+}
--- /dev/null
+# This doesn't work on m68k-motorola-sysv
+# It also doesn't work on m88k-motorola-sysv3
+
+global target_triplet
+if { [istarget "m68k-motorola-sysv"] || [istarget "m88k-motorola-sysv3"] } {
+ set torture_compile_xfail "$target_triplet"
+}
+
+return 0